Oil-well fishing tool



A ril 20, 1926. 1,581,959

J. A. KINCH OIL WELL FISHING TOOL Filed Oct. 22 1925 Patented Apr. 20, 1926.

UNITED STATES JOHN A. Knvcn, or ram, CALIFORNIA.

OIL-WELL FISHING TOOL.

Application filed October 22, 1925. Serial No. 64,146.

To all whom it may concern:

Be 1t known that I, JoHN A. Kmon, a citizen of the United States, residing at Taft, in the county of Kern and State of' California, have invented certain new and useful Improvements in Oil-W'ell'Fishing Tools, of which the following is a specication.

My present invention pertains to oil well tools, and contemplates the provision of an oil well fishing tool possessed of the practical advantages hereinafter ascribed to it.

The invention will be fully understood from the following description and claim when the same are read in connection with the drawings, accompanying and forming part of this specification, in which 2 Figure 1 is a view partly in elevation and partly in section of the tool constituting the best known embodiment of my invention,

of which I am cognizant,

' Figure 2 is an elevation of the rod member of the tool.

Figure 3 is a cross section taken on the plane indicated by the line 3-3 of Figure 1.

Figure 4; is an enlarged perspective of one of the jaws comprised in the tool.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

Among other elements my novel tool comprises a rod like member 1. The memher 1 is bifurcated at its lower end as designated by 2 and is provided in the walls of the bifurcation with apertures 3 in registration, said apertures 8 being designed to receive a pintle 4 through the medium of which side by side apertured lugs 5 at the upper ends of opposed jaws 6 are pivotally connected to the member 1. As shown in Figures 1 and 4 the lower portions of the confrontingfaces of jaws 6 are toothed as designated by 7. The upper portion of the member 1 is enlarged as designatedby 8 and above said enlargement the number 1 is provided with a tapered and threaded portion 9 for conventional use.

Loosely mounted on the lower reduced portion of the member 1 is a sleeve 10 exteriorly of which are longitudinal spring strips 11, the end portion of the said strips 11 being connected to the outer side ofthe sleeve 10 as designated by 12. At its lower end the bore of the sleeve 10 isflared as designated by 13 for cooperation with the jaws 6 as hereinafter explained.

By virtue of the construction of my novel tool as set forth it will be appreciated when a. lug is lost out of an underreamer incident to the under reaming of a casing in a well, the tool will catch the said lug. WVhen the lug is caught in such manner that it can not be brought up through the well casing the difficulty may be overcome by lowering the tool to 'a slight extent when the jaws will open and drop the lug and thereupon the lug may be picked up again as often as is necessary until the lug is so positioned s that it can be brought out of the well. From this it follows that when necessary or desirable the novel tool may be made to release a lug or other piece engagedthereby, which I believe is an advantageous func tion peculiar to my novel tool.

The spring strips 11 on the sleeve 10 have for their function to hold the jaws 6 in open position during the lowering of the tool in the well, and when necessity de mands, the said spring strips are employed to trip the jaws, this by the utilization of friction on the inner side of the casing or in any other place in the well which so far as I know is a feature also peculiar to my novel tool. I

Notwithstanding the practical advantages ascribed to my novel tool, it will be apparent from the foregoing that the tool is simple and compact in construction and while susceptible of being expeditiously and easily manipulated is well adapted to withstand the rough usage to which oil well tools are ordinarily subjected.

On downward movement of the rod like member of the tool in the sleeve thereof, the

pin 14 carried by the sleeve 10 is adapted to thrust the jaws outwardly.

lVhile I have specifically described the i preferred embodiment of my invention in Having described my invention, what I ment thereof and the jaws, exterior resilient 10 claim and desire to secure by Letters Patent, friction-creating means on the sleeve, and is jaw opening means carried by the sleeve An oil well fishing tool comprising a rod and spaced below the connection between 5 like member having an enlarged upper porthe rod like member and the aws.

tion jaws pivotally connected to the lower In testimony whereof I eflix my signaportion of said member, a sleeve loosely arture.

ranged on the rod like member and interposed and movable between said enlarge- JOHN A. KINCH. 

